CN210701755U - Small-caliber thick-wall pipe welding unit and pipe blank - Google Patents
Small-caliber thick-wall pipe welding unit and pipe blank Download PDFInfo
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- CN210701755U CN210701755U CN201921230382.1U CN201921230382U CN210701755U CN 210701755 U CN210701755 U CN 210701755U CN 201921230382 U CN201921230382 U CN 201921230382U CN 210701755 U CN210701755 U CN 210701755U
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Abstract
The utility model discloses a small-caliber thick-wall pipe welding unit and a pipe blank, wherein the pipe welding unit comprises a lathe bed, a feeding device and a high-frequency welding machine, and the feeding device and the high-frequency welding machine are arranged on the lathe bed; the method is characterized in that a first forming unit and a second forming unit are arranged between a feeding device and a high-frequency welding machine, and a sizing unit is arranged behind the high-frequency welding machine; the first forming unit comprises a first forming motor, the second forming unit comprises a second forming motor, and the sizing unit comprises a sizing motor; the first forming motor, the second forming motor and the sizing motor are electrically connected with the upper computer. The utility model has the advantages that adopt the segmentation drive structure, make belted steel obtain qualified small-bore thick walled pipe after leveling, batching back adoption high frequency welding, can be used to the manufacturing of the phi 38X 8 mm's of small-bore heavy wall thickness welded tube, the welding seam cross-section of pipe wall is the X type before using the high frequency welding machine welding, and the welding step of welding seam is more convenient, and it is more firm after the welding, satisfies the trade demand.
Description
Technical Field
The utility model belongs to weld the pipe production facility field, especially relate to a small-bore thick-walled pipe welds pipe unit, pipe.
Background
The steel grades and the variety specifications of steel pipe products are extremely diverse, and the performance requirements are also various, all of which should be distinguished according to the requirements of users or the changes of working conditions. The steel pipe is generally circular in cross-sectional shape, and circular pipes can transport more fluid. Furthermore, the annular cross-section accepts relatively uniform forces when subjected to internal or external radial pressure. At present, a pipe welding unit is used for producing circular pipes, strip steel is welded in a high-frequency welding mode after being flattened and coiled, and a welding seam is formed on the outer surface of the strip steel after the welding is finished. The welding pipe machine set is not suitable for producing small-caliber thick-wall circular pipes due to the fact that the small-caliber thick-wall circular pipes are made of thick materials, a driving motor needs to be configured with large power to produce, equipment cost is high, and electric energy consumption is large; the extruded tube blank is easy to cause the condition of welding impermeability, the product quality is poor, and the production requirement can not be met.
SUMMERY OF THE UTILITY MODEL
1. Problems to be solved
The driving motor to current welded tube unit need dispose great power and just can produce, and equipment cost is high, and power consumption is big, and the pipe welds impervious problem, the utility model provides a small-bore thick-walled pipe welded tube unit, pipe adopts segmentation drive structure, makes belted steel obtain qualified small-bore thick-walled pipe after leveling, batching adoption high frequency welding.
2. Technical scheme
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
a small-caliber thick-wall pipe welding unit comprises a lathe bed, a feeding device and a high-frequency welding machine, wherein the feeding device and the high-frequency welding machine are arranged on the lathe bed; the method is characterized in that a first forming unit and a second forming unit are arranged between a feeding device and a high-frequency welding machine, and a sizing unit is arranged behind the high-frequency welding machine; the first forming unit comprises a first forming motor, the second forming unit comprises a second forming motor, and the sizing unit comprises a sizing motor; the first forming motor, the second forming motor and the sizing motor are electrically connected with an upper computer.
Furthermore, the first forming machine set further comprises a first forming speed reducer, a first forming gear box and a plurality of forming horizontal roller frame assemblies; a plurality of gears which are meshed and connected side by side are arranged in the first forming gear box; the forming horizontal roller frame assembly comprises a forming rack, a forming upper pressing roller and a forming lower pressing roller which are arranged on the forming rack, and a forming upper pressing roller and a forming lower pressing roller which are arranged on the forming upper pressing roller and the forming lower pressing roller and are meshed with each other, wherein the forming upper pressing roller and the forming lower pressing roller are mutually matched up and down to gradually coil the strip steel; the first molding motor, the molding speed reducer and the molding gear box are sequentially connected; the forming gear box is respectively connected with the forming upper press roller and the forming lower press roller.
Furthermore, the second forming unit also comprises a second forming speed reducer, a second forming gearbox and a plurality of forming horizontal roller frame assemblies; a plurality of gears which are meshed and connected side by side are arranged in the second forming gear box; the forming horizontal roller frame assembly comprises a forming rack, a forming upper pressing roller and a forming lower pressing roller which are arranged on the forming rack, and a forming upper pressing roller and a forming lower pressing roller which are arranged on the forming upper pressing roller and the forming lower pressing roller and are meshed with each other, wherein the forming upper pressing roller and the forming lower pressing roller are mutually matched up and down to bear the steel strip processed by the first forming machine set and gradually roll the steel strip into a tube blank; the second forming motor, the second forming speed reducer and the second forming gearbox are connected in sequence; and the second forming gearbox is respectively connected with the plurality of forming upper compression rollers and the forming lower compression rollers.
Furthermore, a plurality of horizontal roller frame subassemblies of shaping interval setting, set up the vertical roll subassembly in interval department, the vertical roll subassembly includes vertical roll mount pad and the vertical roll of setting on the vertical roll mount pad.
Furthermore, the sizing unit also comprises a sizing speed reducer, a sizing gear box and a plurality of sizing horizontal roller frame assemblies; a plurality of gears meshed and connected side by side are arranged in the sizing gear box; the sizing horizontal roller frame assembly comprises a sizing frame, a sizing upper pressing roller and a sizing lower pressing roller which are arranged on the sizing frame, and a sizing upper pressing roller and a sizing lower pressing roller which are arranged on the sizing upper pressing roller and the sizing lower pressing roller and are mutually meshed; the sizing motor, the sizing speed reducer and the sizing gear box are sequentially connected; the sizing gear box is respectively connected with the sizing upper press roller and the sizing lower press roller.
Furthermore, the sizing horizontal roller frame assemblies are arranged at intervals, vertical roller assemblies are arranged at the intervals, and each vertical roller assembly comprises a vertical roller mounting seat and a vertical roller arranged on the vertical roller mounting seat.
Furthermore, an auxiliary vertical roller assembly is arranged between the high-frequency welding machine and the sizing unit.
Furthermore, a tool rest assembly is arranged between the high-frequency welding machine and the auxiliary vertical roll assembly and is used for scraping welding slag of the welding seam.
Further, the bed comprises a forming bed and a sizing bed; a feeding device, a first forming unit, a second forming unit and a high-frequency welding machine are arranged on the forming lathe bed; a sizing unit, a Turkish head and a speed measuring roller are arranged on the sizing bed body; the Turkish head is used for straightening the straightness of the steel pipe, guiding the steel pipe to enter the flying saw correctly and also sizing the pitch pipe.
Furthermore, the feeding device comprises a plurality of upper feeding rollers and lower feeding rollers which are arranged along the running direction of the strip steel, and the upper feeding rollers and the lower feeding rollers are arranged on the mounting frame at intervals in parallel.
Furthermore, the rotating speeds of the first forming motor, the second forming motor and the sizing motor are the same when the sizing motor runs.
A small-caliber thick-wall pipe blank comprises a strip steel body and is characterized in that the pipe blank is manufactured and molded by the pipe welding unit, and the edge part of the strip steel body, which is reserved at a welding seam when the strip steel body comes out of a last molding horizontal roller frame assembly of a second molding unit, is bent inwards to form an X shape.
Furthermore, the utility model relates to a small-bore thick-walled pipe welded tube unit can be used to the application in the production phi 38 x 8mm welded tube.
During the use, belted steel gets into the shaping horizontal roll frame subassembly of first shaping unit through feeding device, passes through other four shaping horizontal roll frame subassemblies in proper order, then gets into the shaping horizontal roll frame subassembly of second shaping unit, the pipe shaping that comes out by the shaping horizontal roll frame subassembly before the high frequency welding machine, in gap department, the both ends of belted steel inwards shrink, the head alternately is the X-shaped, weld by the high frequency welding machine behind the crack guide assembly, the welding slag is scraped off through the knife rest subassembly after the welding, get into the sizing unit through supplementary edger, the sizing unit is made the welded tube circular.
3. Advantageous effects
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the forming unit and the sizing unit respectively use the row gear boxes and are driven by independent motors, so that the action consistency of front and rear equipment of each associated unit is ensured, the strip steel is prevented from being pulled and broken during coiling and forming, and parts are protected from being damaged.
(2) Use the utility model discloses a welded tube that welded tube unit made can be used to the manufacturing of the phi 38X 8 mm's of small-bore heavy wall thickness welded tube, and the welding seam cross-section of pipe wall is the X type before using the high frequency welding machine welding, and the welding step of welding seam is more convenient, and the welding back is more firm, satisfies the trade demand.
(3) The machine body is arranged in sections, and relevant equipment for forming and welding the welded pipe is arranged on the forming machine body to ensure the forming coaxiality of the welded pipe; the sizing bed body is provided with sizing equipment after welding of the welded pipe is completed, and the coaxiality of the sizing equipment is ensured; the sectional arrangement reduces the direct length, saves the material cost of the integral forming of the lathe bed and is convenient to transport.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view structure schematic diagram of the related components on the forming lathe bed of the utility model.
Fig. 2 is a front view structure schematic diagram of the related components of the auxiliary vertical roll component and the sizing bed body of the utility model.
Fig. 3 is a schematic view of the top view structure of the related components of the forming lathe of the present invention.
Fig. 4 is a schematic top view of the related components of the auxiliary vertical roll assembly and the sizing bed of the present invention.
Fig. 5 is a structural schematic diagram of the forming horizontal roller frame assembly in right view.
Fig. 6 is the structure schematic diagram of the sizing horizontal roller frame assembly viewed from the right.
Fig. 7 is a schematic structural diagram of the vertical roll assembly of the present invention.
Fig. 8 is a schematic view of the feeding device mechanism of the present invention.
In the figure: 1-feeding device 2-first forming motor 3-second forming motor 4-sizing motor 5-first forming speed reducer 6-first forming gear box 7-forming horizontal roller frame component 8-forming frame 9-forming upper press roller 10-forming lower press roller 11-forming upper press roller 12-forming lower press roller 13-second forming speed reducer 14-second forming gear box 15-vertical roller component 16-vertical roller mounting seat 17-vertical roller 18-sizing speed reducer 19-sizing gear box 20-sizing horizontal roller frame component 21-seam guide component 22-auxiliary vertical roller component 23-knife rest component 24-forming lathe bed 25-sizing lathe bed 26-Turkish head 27-speed measuring roller 28-feeding upper roller 29-feeding lower press roller The sizing machine comprises a roller 30, a sizing frame 31, a sizing upper press roller 32 and a sizing lower press roller.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the utility model.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, e.g. as a fixed connection, a detachable connection or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the utility model can be understood in specific cases to those of ordinary skill in the art.
As shown in fig. 1 to 7, a small-caliber thick-wall tube welding unit comprises a machine body, a feeding device 1 and a high-frequency welding machine (not shown), wherein the feeding device 1 and the high-frequency welding machine are arranged on the machine body; the method is characterized in that a first forming unit and a second forming unit are arranged between a feeding device 1 and a high-frequency welding machine, and a sizing unit is arranged behind the high-frequency welding machine; the first forming unit comprises a first forming motor 2, the second forming unit comprises a second forming motor 3, and the sizing unit comprises a sizing motor 4; the first forming motor 2, the second forming motor 3 and the sizing motor 4 are electrically connected with an upper computer (not labeled in the figure).
The first forming machine set also comprises a first forming speed reducer 5, a first forming gear box 6 and a plurality of forming horizontal roller frame assemblies 7; a plurality of gears which are meshed and connected side by side are arranged in the first forming gear box 6; the forming horizontal roller frame assembly 7 comprises a forming machine frame 8, a forming upper pressing roller 9 and a forming lower pressing roller 10 which are arranged on the forming machine frame 8, and a forming upper pressing roller 11 and a forming lower pressing roller 12 which are arranged on the forming upper pressing roller and the forming lower pressing roller and are mutually meshed, wherein the forming upper pressing roller 11 and the forming lower pressing roller 12 are mutually matched up and down to gradually coil strip steel; the first molding motor 2, the molding speed reducer and the molding gear box are connected in sequence; the forming gear box is respectively connected with a plurality of forming upper press rollers 9 and a plurality of forming lower press rollers 10.
The second forming unit also comprises a second forming speed reducer 13, a second forming gear box 14 and a plurality of forming horizontal roller frame assemblies 7; a plurality of gears which are meshed and connected side by side are arranged in the second forming gear box 14; the forming horizontal roller frame assembly 7 comprises a forming rack 8, a forming upper pressing roller 9 and a forming lower pressing roller 10 which are arranged on the forming rack 8, and a forming upper pressing roller 11 and a forming lower pressing roller 12 which are arranged on the forming upper pressing roller and the forming lower pressing roller and are meshed with each other, wherein the forming upper pressing roller 11 and the forming lower pressing roller 12 are matched with each other up and down to bear the steel belt processed by the first forming machine and enable the steel belt to be gradually coiled into a pipe blank; the second forming motor 3, the second forming speed reducer 13 and the second forming gearbox 14 are connected in sequence; the second forming gearbox 14 is respectively connected with a plurality of forming upper press rollers 9 and a plurality of forming lower press rollers 10.
A plurality of shaping horizontal roller frame subassemblies 7 interval sets up, sets up edger roll subassembly 15 in interval department, and edger roll subassembly 15 includes edger roll mount pad 16 and sets up the edger roll 17 on edger roll mount pad 16.
The sizing unit also comprises a sizing speed reducer 18, a sizing gear box 19 and a plurality of sizing horizontal roller frame components 20; a plurality of gears which are meshed and connected side by side are arranged in the sizing gear box 19; the sizing horizontal roller frame assembly 20 comprises a sizing frame 30, a sizing upper pressing roller 31 and a sizing lower pressing roller 32 which are arranged on the sizing frame 30, and a sizing upper pressing roller and a sizing lower pressing roller which are arranged on the sizing upper pressing roller and the sizing lower pressing roller and are meshed with each other; the sizing motor 4, the sizing reducer 18 and the sizing gear box 19 are connected in sequence; the sizing gear box 19 is connected with a plurality of sizing upper press rolls 31 and sizing lower press rolls 32 respectively.
A plurality of sizing horizontal roller frame assemblies 20 are arranged at intervals, vertical roller assemblies 15 are arranged at the intervals, and each vertical roller assembly 15 comprises a vertical roller mounting seat 16 and a vertical roller 17 arranged on the vertical roller mounting seat 16.
A seam guide component 21 is arranged between the second forming machine set and the high-frequency welding machine.
An auxiliary vertical roller assembly 22 is arranged between the high-frequency welding machine and the sizing unit.
And a tool rest assembly 23 is arranged between the high-frequency welding machine and the auxiliary vertical roller assembly 22, and the tool rest assembly 23 is used for scraping welding slag of a welding seam.
The bed body comprises a forming bed body 24 and a sizing bed body 25; the forming lathe bed 24 is provided with a feeding device 1, a first forming unit, a second forming unit and a high-frequency welding machine; a sizing unit, a Turkish head 26 and a speed measuring roller 27 are arranged on the sizing bed body; the Turkish head 26 is used to straighten the straightness of the welded pipe, guide the welded pipe into the flying saw correctly, and also to straighten the diameter of the pipe.
As shown in fig. 7, the feeding device 1 comprises a plurality of upper feeding rollers 28 and lower feeding rollers 29 arranged along the traveling direction of the strip steel, and the upper feeding rollers 28 and the lower feeding rollers 29 are arranged on a mounting frame at intervals in parallel.
The first forming motor 2, the second forming motor 3 and the sizing motor 4 have the same rotating speed in operation.
A small-caliber thick-wall pipe blank comprises a strip steel body and is characterized in that the pipe blank is manufactured and molded by the pipe welding unit, and the edge part of the strip steel at the reserved welding line when the strip steel body comes out of the last molding horizontal roller frame component 7 of the second molding unit is bent inwards to form an X shape.
The utility model also provides an application of above-mentioned small-bore thick-walled pipe welded tube unit in production phi 38 x 8mm welded tube.
During the use, belted steel gets into the shaping horizontal roller frame subassembly 7 of first forming unit through feeding device 1, passes through other four shaping horizontal roller frame subassemblies 7 in proper order, then gets into the shaping horizontal roller frame subassembly 7 of second forming unit, the pipe shaping that comes out by shaping horizontal roller frame subassembly 7 before the high frequency welding machine, in gap department, the both ends of belted steel inwards shrink, the head alternately is the X-shaped, weld by the high frequency welding machine behind crack guide assembly 21, scrape off the welding slag through knife rest subassembly 23 after the welding, get into the sizing unit through supplementary edger, the sizing unit will weld the pipe and make circularly.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A small-caliber thick-wall pipe welding unit comprises a lathe bed, a feeding device and a high-frequency welding machine, wherein the feeding device and the high-frequency welding machine are arranged on the lathe bed; the method is characterized in that: a first forming unit and a second forming unit are arranged between the feeding device and the high-frequency welding machine, and a sizing unit is arranged behind the high-frequency welding machine; the first forming unit comprises a first forming motor, the second forming unit comprises a second forming motor, and the sizing unit comprises a sizing motor; the first forming motor, the second forming motor and the sizing motor are electrically connected with an upper computer.
2. The small-caliber thick-wall pipe welding unit according to claim 1, characterized in that: the first forming unit also comprises a first forming speed reducer, a first forming gear box and a plurality of forming horizontal roller frame assemblies; a plurality of gears which are meshed and connected side by side are arranged in the first forming gear box; the forming horizontal roller frame assembly comprises a forming rack, a forming upper pressing roller and a forming lower pressing roller which are arranged on the forming rack, and a forming upper pressing roller and a forming lower pressing roller which are arranged on the forming upper pressing roller and the forming lower pressing roller and are mutually meshed, wherein the forming upper pressing roller and the forming lower pressing roller are mutually matched up and down; the first molding motor, the molding speed reducer and the molding gear box are sequentially connected; the forming gear box is respectively connected with the forming upper press roller and the forming lower press roller.
3. The small-caliber thick-wall pipe welding unit according to claim 1, characterized in that: the second forming unit also comprises a second forming speed reducer, a second forming gearbox and a plurality of forming horizontal roller frame assemblies; a plurality of gears which are meshed and connected side by side are arranged in the second forming gear box; the forming horizontal roller frame assembly comprises a forming rack, a forming upper pressing roller and a forming lower pressing roller which are arranged on the forming rack, and a forming upper pressing roller and a forming lower pressing roller which are arranged on the forming upper pressing roller and the forming lower pressing roller and are mutually meshed, wherein the forming upper pressing roller and the forming lower pressing roller are mutually matched up and down; the second forming motor, the second forming speed reducer and the second forming gearbox are connected in sequence; and the second forming gearbox is respectively connected with the plurality of forming upper compression rollers and the forming lower compression rollers.
4. The small-caliber thick-wall pipe welding unit according to claim 2 or 3, characterized in that: the forming horizontal roller frame assemblies are arranged at intervals, the vertical roller assemblies are arranged at the intervals, and each vertical roller assembly comprises a vertical roller mounting seat and a vertical roller arranged on the vertical roller mounting seat.
5. The small-caliber thick-wall pipe welding unit according to claim 1, characterized in that: the sizing unit also comprises a sizing speed reducer, a sizing gear box and a plurality of sizing horizontal roller frame components; a plurality of gears meshed and connected side by side are arranged in the sizing gear box; the sizing horizontal roller frame assembly comprises a sizing frame, a sizing upper pressing roller and a sizing lower pressing roller which are arranged on the sizing frame, and a sizing upper pressing roller and a sizing lower pressing roller which are arranged on the sizing upper pressing roller and the sizing lower pressing roller and are mutually meshed; the sizing motor, the sizing speed reducer and the sizing gear box are sequentially connected; the sizing gear box is respectively connected with the sizing upper press roller and the sizing lower press roller.
6. The small-caliber thick-wall pipe welding unit according to claim 5, characterized in that: the sizing horizontal roller frame assemblies are arranged at intervals, the vertical roller assemblies are arranged at the intervals, and each vertical roller assembly comprises a vertical roller mounting seat and a vertical roller arranged on the vertical roller mounting seat.
7. The small-caliber thick-wall pipe welding unit according to claim 1, characterized in that: the lathe bed comprises a forming lathe bed and a sizing lathe bed; a feeding device, a first forming unit, a second forming unit and a high-frequency welding machine are arranged on the forming lathe bed; the sizing bed body is provided with a sizing unit, a Turkish head and a speed measuring roller.
8. The small-caliber thick-wall pipe welding unit according to claim 1, characterized in that: the rotating speeds of the first forming motor, the second forming motor and the sizing motor are the same when the first forming motor, the second forming motor and the sizing motor run.
9. The utility model provides a small-bore thick-walled pipe, includes belted steel body, its characterized in that: the tube blank is manufactured and formed by the small-caliber thick-wall tube welding unit according to any one of claims 1 to 8, and the edge part of the strip steel at the reserved welding seam is bent inwards to form an X shape when the strip steel body is discharged from the last forming horizontal roller frame assembly of the second forming unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921230382.1U CN210701755U (en) | 2019-08-01 | 2019-08-01 | Small-caliber thick-wall pipe welding unit and pipe blank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921230382.1U CN210701755U (en) | 2019-08-01 | 2019-08-01 | Small-caliber thick-wall pipe welding unit and pipe blank |
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| CN210701755U true CN210701755U (en) | 2020-06-09 |
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| CN201921230382.1U Active CN210701755U (en) | 2019-08-01 | 2019-08-01 | Small-caliber thick-wall pipe welding unit and pipe blank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340175A (en) * | 2019-08-01 | 2019-10-18 | 张家港市中悦冶金设备科技有限公司 | A kind of Detecting of Small Caliber Thick Pipes welded pipe units, pipe and application |
-
2019
- 2019-08-01 CN CN201921230382.1U patent/CN210701755U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340175A (en) * | 2019-08-01 | 2019-10-18 | 张家港市中悦冶金设备科技有限公司 | A kind of Detecting of Small Caliber Thick Pipes welded pipe units, pipe and application |
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